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Advances in Acoustics and Vibration
Volume 2019, Article ID 7015262, 9 pages
https://doi.org/10.1155/2019/7015262
Research Article

Analyses of Dynamic Behavior of Vertical Axis Wind Turbine in Transient Regime

Laboratory of Mechanical Modeling and Production (LA2MP), National School of Engineers of Sfax (ENIS), University of Sfax, BP 1173, 3038, Tunisia

Correspondence should be addressed to Bacem Zghal; moc.liamg@lahgz.mecab

Received 19 October 2018; Accepted 6 March 2019; Published 10 April 2019

Academic Editor: Emil Manoach

Copyright © 2019 Bacem Zghal et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this paper, the dynamic behavior of a one-stage bevel gear used in vertical axis wind turbine in transient regime is investigated. Linear dynamic model is simulated by fourteen degrees of freedom. Gear excitation is induced by external and internal sources which are, respectively, the aerodynamic torque caused by the fluctuation of input wind speed in transient regime and the variation of gear mesh stiffness. In this study, the differential equations governing the system motion are solved using an implicit Newmark algorithm. In fact, there are some design parameters, which influence the performance of vertical axis wind turbine. In order to get the appropriate aerodynamic torque, the effect of each parameter is studied in this work. It was found that the rotational speed of the rotor shaft has a significant effect on the aerodynamic torque performance.